<%@ page  contentType="text/html;charset=UTF-8" language="java"%>
<%-- <html>
   <head>
       <title>登陆</title>
       <style>
         .error{color:red}
       </style>
   </head>
   <body>
       <div class="error">${error}</div>
       <form action="" method="post">
                          用户名:<input type="text" name="username"/><br/>
                          密码:<input type="password" name="password"><br/>
         <input type="submit" value="登陆"/>
       </form>
   </body>
</html> --%>
<!-- Session会话管理 -->
<html>
  <head>
     <title>登陆页面</title>
     <style>
     .error{ color:red;}
     </style>
  </head>
  <body>
     <div class="error">${error}</div>
     <form action="" method="post">
        <p>用户名:<input type="text" name="username"></p>
        <p>密码:<input type="password" name="password"></p>
        <input type="submit" value="登陆">
     </form>  
  </body>
</html>